Your Mini 3 had a wideangle lens like all DJI main cameras.
Yours field of view equivalent (in 35mm terms) of a 24 mm lens , so it was quite wide and makes things look further away than they actually are.
I have no idea what you think that...
Your drone sets its zero height when the drone powers up, not when GPS is acquired.
Height completely unrelated to GPS and homepoints are two-dimensional lat/long data with no height.
Sorry but this isn't true.
The only issue that launching...
Strangest flight data I've ever seen - nothing makes sense.
I've had a look at your flight data and can't find anywhere that the throttle input has any relation to drone height.
Not just in the end of the flight, but right from startup.
Also ...